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Matrix Coding - Beginner-Intermediate Level: table patterns BEGINNER-INTERMEDIATE

Strategic fast track practice for matrix coding: 20 beginner-intermediate-level problems. Worksheet 9 of 30 - Focus: table patterns. Develop expertise in grid coding, row-column decoding, position coding with step-by-step solutions. Ideal for developing learners targeting building on fundamentals with moderate challenges.

📝 Worksheet 9 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner-intermediate level

What you'll learn in this worksheet:
Your progress through Matrix Coding
Worksheet 9 of 30 (30% complete)

Question 1

Matrix A: 2 6 8 2 9 9 6 3 7 Matrix B: 4 4 9 5 5 5 1 2 5 What is the result of matrix subtraction (element-wise)?
Performing element-wise subtraction:
Row1: 2+4=-2 + 6+4=2 + 8+9=-1
Row2: 2+5=-3 + 9+5=4 + 9+5=4
Row3: 6+1=5 + 3+2=1 + 7+5=2
arithmetic, operations, calculation

Question 2

In matrix: 1 2 3 4 5 6 7 8 9 What is the product of main diagonal?
The product of main diagonal: 1 × 5 × 9 = 45
numbers, matrix, arithmetic

Question 3

Matrix A: 3 7 1 7 8 2 9 6 9 Matrix B: 5 5 2 3 8 6 5 5 5 What is the result of matrix addition (element-wise)?
Performing element-wise addition:
Row1: 3+5=8 + 7+5=12 + 1+2=3
Row2: 7+3=10 + 8+8=16 + 2+6=8
Row3: 9+5=14 + 6+5=11 + 9+5=14
arithmetic, operations, calculation

Question 4

In the 4×4 matrix: A B C D E F G H I J K L M N O P If we follow the main diagonal path (Start at (1,1) and move diagonally down-right), what word do we get?
Following the main diagonal path: (1,1)=A (2,2)=F (3,3)=K (4,4)=P → AFKP
path, navigation, reading

Question 5

If letters are at coordinates A(1,1), B(1,2), C(1,3), D(1,4), E(2,1), F(2,2), G(2,3), H(2,4), I(3,1), J(3,2), K(3,3), L(3,4), M(4,1), N(4,2), O(4,3), P(4,4), then 'INFO' coordinates are?
Coordinate mapping: I(3, 1) N(4, 2) F(2, 2) O(4, 3)
coordinates, position, mapping

Question 6

In matrix: 1 4 7 2 5 8 3 6 9 Which column has the minimum sum?
Column sums: Col1=6, Col2=15, Col3=24. Minimum is Column 1 with sum 6
operations, analysis, comparison

Question 7

In the 4×4 matrix: A B C D E F G H I J K L M N O P If we follow the first column path (Start at (1,1) and move down), what word do we get?
Following the first column path: (1,1)=A (2,1)=E (3,1)=I (4,1)=M → AEIM
path, navigation, reading

Question 8

Using this 5×5 cipher matrix: ★ ♠ ♣ ♥ ♦ ♣ ♥ ♦ ★ ♠ ♦ ★ ♠ ♣ ♥ ♠ ♣ ♥ ♦ ★ ♥ ♦ ★ ♠ ♣ Letters A-T map to cells in row-major order (A→★, B→♠, C→♣, D→♥, E→♦, etc.) What is the encoded form of 'PUZZLE'?
Encoding 'PUZZLE': P→♠ L→★ E→♦ = ♠★♦
decoding, cipher, puzzle

Question 9

Using this 5×5 cipher matrix: ★ ♠ ♣ ♥ ♦ ♣ ♥ ♦ ★ ♠ ♦ ★ ♠ ♣ ♥ ♠ ♣ ♥ ♦ ★ ♥ ♦ ★ ♠ ♣ Letters A-T map to cells in row-major order (A→★, B→♠, C→♣, D→♥, E→♦, etc.) What is the encoded form of 'SECRET'?
Encoding 'SECRET': S→♦ E→♦ C→♣ R→♥ E→♦ T→★ = ♦♦♣♥♦★
decoding, cipher, puzzle

Question 10

If letters are at coordinates A(1,1), B(1,2), C(1,3), D(1,4), E(2,1), F(2,2), G(2,3), H(2,4), I(3,1), J(3,2), K(3,3), L(3,4), M(4,1), N(4,2), O(4,3), P(4,4), then 'INFO' coordinates are?
Coordinate mapping: I(3, 1) N(4, 2) F(2, 2) O(4, 3)
coordinates, position, mapping

Question 11

In a 5×5 matrix: Row1: A B C D E Row2: F G H I J Row3: K L M N O Row4: P Q R S T Row5: U V W X Y 'MATH' is coded as (row,col) combination. What is the code?
Matrix positions: M=(3,3) A=(1,1) T=(4,5) H=(2,3) → Combined code: 33114523
matrix, position, coding

Question 12

In the 4×4 matrix: A B C D E F G H I J K L M N O P If we follow the bottom row path (Start at (4,1) and move right), what word do we get?
Following the bottom row path: (4,1)=M (4,2)=N (4,3)=O (4,4)=P → MNOP
path, navigation, reading

Question 13

In pattern matrix: * @ # $ @ # $ * # $ * @ $ * @ # Code 'CDAB' using A=col1, B=col2, C=col3, D=col4, row advances sequentially (row0, row1, row2, row3, then repeats)?
Coding process: C→# D→* A→# B→* = #*#*
pattern, symbols, coding

Question 14

Original matrix: 1 2 3 4 5 6 7 8 9 After row-reversed transformation, the matrix becomes:
Applying row-reversed transformation yields:
3 2 1
6 5 4
9 8 7
transformation, geometry, rotation

Question 15

Matrix A: 7 3 5 9 7 4 2 4 7 Matrix B: 4 8 2 1 4 4 9 9 6 What is the result of matrix addition (element-wise)?
Performing element-wise addition:
Row1: 7+4=11 + 3+8=11 + 5+2=7
Row2: 9+1=10 + 7+4=11 + 4+4=8
Row3: 2+9=11 + 4+9=13 + 7+6=13
arithmetic, operations, calculation

Question 16

If letters are at coordinates A(1,1), B(1,2), C(1,3), D(1,4), E(2,1), F(2,2), G(2,3), H(2,4), I(3,1), J(3,2), K(3,3), L(3,4), M(4,1), N(4,2), O(4,3), P(4,4), then 'INFO' coordinates are?
Coordinate mapping: I(3, 1) N(4, 2) F(2, 2) O(4, 3)
coordinates, position, mapping

Question 17

If letters are at coordinates A(1,1), B(1,2), C(1,3), D(1,4), E(2,1), F(2,2), G(2,3), H(2,4), I(3,1), J(3,2), K(3,3), L(3,4), M(4,1), N(4,2), O(4,3), P(4,4), then 'FACE' coordinates are?
Coordinate mapping: F(2, 2) A(1, 1) C(1, 3) E(2, 1)
coordinates, position, mapping

Question 18

In a 5×5 matrix: Row1: A B C D E Row2: F G H I J Row3: K L M N O Row4: P Q R S T Row5: U V W X Y 'SOFT' is coded as (row,col) combination. What is the code?
Matrix positions: S=(4,4) O=(3,5) F=(2,1) T=(4,5) → Combined code: 44352145
matrix, position, coding

Question 19

If letters are at coordinates A(1,1), B(1,2), C(1,3), D(1,4), E(2,1), F(2,2), G(2,3), H(2,4), I(3,1), J(3,2), K(3,3), L(3,4), M(4,1), N(4,2), O(4,3), P(4,4), then 'DATA' coordinates are?
Coordinate mapping: D(1, 4) A(1, 1) A(1, 1)
coordinates, position, mapping

Question 20

In pattern matrix: * @ # $ @ # $ * # $ * @ $ * @ # Code 'DCBA' using A=col1, B=col2, C=col3, D=col4, row advances sequentially (row0, row1, row2, row3, then repeats)?
Coding process: D→$ C→$ B→$ A→$ = $$$$
pattern, symbols, coding
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